Excavating-machine.



C. E. KWG, F. RENZENHEBGEE HLNHJS.`

iwsfwmmc Mmmm.

APFLICION FILED JUNE l5. I9HT.

hmmm Jail. 29,1918.

3 SHEETS-SHEET l* u E. www'. mim/immane @L "3G, HQLMES. wwwrun@ mams. NELATIH FILED HNE 16| 19,11.

Paten@ Jan. 29,1916.

3 SHEETS-SHEET 2,

C. as. ma i2, wwwmain @a QHULMES.

EKCAVAHHG MACHENE., MPmcmlqee msn lulu 16. 19m'.

Patented Jan. 29,1918.

Lmmm.

= A TTQRNEY UNITED STATES PATENT OFFICE.

GHRLES B. K-INGAND. FRANK BENZENBEBGEB, 0F MAHJOIN',` OHIO, `AND GRANT HOLMES, OF DANVILLE, ILLINOS, ASSIGNORS T THE MARION STEAM SHOVEL COMPANY, OF MARION, OHIO, A CORPORATION 02E' OHIO.

EXCLVATING-MACHINE.

Bpecincation of Lettera Patent.

Application iisd June 16, 1917. Serial No. 175,075.

To all whom z'tmay concern.'

Be it known that we, CHARLES B. Kum` and FRANK RENZENBEEGER, citizens of the United States, residing at Marion, -in the county' of Marion and State' 0f Ohio, and GRANT HOLMES, a citizen of the United States, residin atv Danville, in the county of Vermilion an State of Illinois, have invented certain new and useful Improvements in Excavating-Machines, of which the followin' is aspeciication, reference being had t erein to the accompanying drawings. y

This invention relates to excavating machines and more particularly to a machine for excavating and loading coal.

In many parts of this count coal deposits are found close to the sur ace of the earth and this coal is removed by first strippingtherefrom the overburden of earth and rock, and then removing the coal with suit- 'provide a machine which will remove the able excavating machines, such `as an ordinary steam shovel. The use of the ordinary excavating machine for this purpose is open to several objections, such, for example, as the tendency of the usual excavating dipper to break up the coal to a greater extent than is desirable. Further, in these Coal deposits there frequently occur partings 'of considerable depth `which are iilled with earth, or other foreign matter, and in some fields there occur ridges of clay which extend vertically through the vein, breaking it up into a plurality of parts. With the ordinary excavating machine it is Vvery difti cult, if not impossible, to remove all the coal from the veinwithout removing and mixngwth the coal part of the earth, or clay, found in these parti'ngzs, or ridges. The object of the present/invention is to coal without unduly breaking the same, and which can he so manipulated so as to remove all the coalfrorn the vein without mixing it either with earth, or other foreign matl ter, and t'l'provide such a machine which will be simple in its construction, positive in its operation, and of stron g, durable' character. To thisend it' is a further object of the invention to provide a machine of this character having a dipper supporting device, the movements of which are controlled byv a boom; and further to so mount the dipper sup orting device that it may be vertically a justed bodily to enable the dipper to operate successively `alon vaplurality of substantially straight para lel lines, thereby enabling the coal to be removed in layers to the full depth of the vein without altering the position of the machine as a whole. A further object of the invention is to provide such a mechanism which can be mounted u on an ordinary steam shoveh, in place of t e. usual excavating mechanism, and operated by the power plant of such a shovel, thus enabling the owner of an ordinary power'shovel to convert the same into a coal mining machine by substituting for the usual excavating mechanism that herein shown and described. A Other objects of the invention will appear as the mechanism is described in detail.

In .the accompanying drawings Figure 1 is a side elevation, partly broken away, of a machine embodying our invention; Fig. 2 is a plan view, partly brokenaway, of suol# a machine; Fig. 3 is a sectional vic? of the. upright frame on the line 3 3' of Fig. a, on an enlarged scale; Fig. 4 is a front elevation of the upright `frame with the boom and dipper arm in section; Fig. 5 is a horizontal sectional view of the upright frame taken on the line 5-'-5 of Fig. 4; and Fig. 6 is a front elevation of the excavating clipper.

In these drawings we have illustrated one embodiment of our invention and have shown the same as applied to an ordinary rota-ry steam shovel, which constitutes the supporting structure for the operating devices, but it will be understood that the device may be mounted upon a supporting structure of any suitable character; an

further that, while the present machine is Patented Jan. 29,1913.

tion is required, for example, in road work.

As here illustrated, the supporting struc ture comprises a base 1 which is supported by wheels 2 and has rotatably mounted thereon a platform 3 on which is mounte the steam plant 4, which furnishes power for operating the various mechanisms for propelling the machine as a whole, for oper.

ating the 'excavating devices and for rotating the frame. To enable theV frame to be -rotated art annular rack 5 is mounted on the base and meshing with said rack is a lpinion 6 carried by a shaft 7 journaled on the frame 3 and driven through suitable gearing from an engine 8. A pair of engines 9 connected with a common engine shaft l() serve to operate the propelling, hoisting and excavating devices, l'lhisshaft 10 is connected through, suitable gearing with ay vertical shaft 11 arranged lcentrally of the' platform 3, which extends through the base 1 andvis,l

' excavating dipper, and is of Stich a character 'say tate the movementsof the carriage.

that this dlppeiliamy movettji'fvard'and from the 'supporting structure in' a substantially straight line, and further," the dipper supporting device is of such a character that the flipper may inoved along a substantially horizontal plane; or at such an angle to the horizontal as may he desired. vThis clipper supporting device is preferably supported at its outer 'end hy a boom, which controls the movements thereof. lThe dipper supporting device may be of 'anyjsuitable character, but as here shown comprises a rigid arm le pivotally mounted at its rear end 0u the supporting'v structure, and having mounted thereon tor movement longitudinelly thereof an 'excavating dipper 15.' This clipper may he ci? any suitable character and may be connected 4with the dipperfsupportingdevice in any suitable manneryand in theconstruction here shown it has a sub stantially fiat bottom and is provided at its Y:forward-or ycutting edge `with dipper teeth 16, HThe clipper is preferably connected with the clipper supporting device,or arm, h a

carriage which will, of course, be of suc er" construction as to accommodatel 1t` to the character ofthe dippersupportin'g device, but is hereJ shown as comprising apair of side plates 17 arranged on opposite sides of the clipper armv and connected one to the other by bolts 18 arranged aboveand `helow the dipper arm, andwhich may, itdesired,N be provided with rollers 19 Itov engage the upper and lower edges ofthe arm and farclilii e dipper proper-is preferably of a rigid construction and is pivotally connected'withthe clipper supportingdevie'e to permitrthe `for ward end thereof to move-downward to discharge the contents therefrom'. In the presf ent instance the carriage 17 is provided with a. bese plate, or casting, 20, to which the uplatch bars are held normally in theiropera-V tive positions by springs 25 and have connected therewith a cable 26 leading to the supporting structure, or such other point from which it is desired to control the dumpingof the flipper. The clipper is "provided along its lateral edges with forwardly tapering side walls 27 which have a wedgelike part ofthe coal beneath which the clipper extentie and to break the same loose from the adjacent portions of the vein of coal. ln

vided the forwardly extending part 22 ofv the dipper with a depending forwardly inz -clined rib 28, which will be engaged by the rear edge of the layer of coal as it moves along the rearwardly inclined side walls of thel flipper, and will force the same downward, thus serving to 'break the coal after the manner shown in Fig. 6. Forward or excavating movement is imparted to the dipper by means of a cable 29 which is connected at one end to the forwardly extending upper part 22, of the dipper, thence extending about a sheave 33 at the forward end of the boom, thence rearwardly to a hoisting drum 3a mounted on a shaft 35 on the plat form 3, which is driven through suitable gearing from the engine shaft 10. iliearward or return movement is imparted to the di'pper by means of a cable 36 connected with the carriage 17, and extending rearwardly 'to a drum 375 also mounted on the shaft 35..

The drums` 34 and 37 are loosely mounted on thel shaft '35.,and are connected-thereto by a action upon the coal and serve to lift that ilo suitable clutch, or clutches, so `'arranged that when one drum is connectedvwith the shaft for rotation therewith t0 impart movementito the dipper lthe other drum will he loosely mounted on the shaft and free to rotate 'to 'permit its cableto pav out as the dipper is moved by the other cable.

The coal constituting avein is usually `divided into layers by partings, which are approximately parallel and which ordinarily extend substantially horizontally. In l l i the forward movement of the dipper the cutting edge is caused `to travel along oneof these partings and to remove the layer, or

layers, of the coal lying above that particu- Y' lar parting.` After all the coal of one .layerr which can be reached by the flipper, has been the relative longitudinal movement of the ends of the two parts during the hoisting operation'. As the boom and the dipper supporting deviceare mounted on diilerent centers, the distance between their ends changes as they move about their respective axes, and is further ai'ected by the vertical adjustment ofthe dipper Supporting device. To permit. of this relative movement, we have, in the present construction, connected the-two parts by means of a pair of links 75, pivotally connected at their' upper ends with the "boom and at their lower ends with the dipper sup porting device, the connections being` preferably made by mounting the links on. the shafts which carry the sheaves '71 and 33,

respectively.

The'operation of the mechanism Will be readily/"understood from the foregoing de Scription of the several parte hereof.. yBriefly it ie as follows: The machine is placed at the edge of the vein on a surface some dieu tance below `the top of the vein. The clipper supporting device is elevated distance corresponding tothe depth el. the vein and is so positioned that the dipper niaymb u"ciiisely to enter a parting spaced at. a. sui-table distance V:i1-oni the top of'the vein, the thickness of the of coal above the parting along which the clipper operates preferably being suele that the dipper will be lilled by a movement equal to its length.. With the dipper in this jposition the pull cable 29 is operated to force the dinner along tlie parting and to .fill the saine with coal. After the dipper is full 4tbe boom is hoisted by means of the 'cable 72 and carries with it the outer end of' 'the dinner supporting device. During the hoisting; operation the vpull cable 2f? is further operated to carry the dippertovvard the end of the flipper sun-v porting device, and the boom Ais swung 'laterally, in the present ii'xetance by rotating 4the frame 3g to carry the flipper to the 'point or" discharge, which' ordnen-ily is acoal car, When the dipper has been moved above the point of .discharge tine latch lbars 26e are tripped bymeans of the'calile 26 and the clipper permitted to drop to. discharge its load into the cantlie pullecable having been slacked oil to permit of this movement of the clipper. As the clipper eupporting-de- -vice is returned to operatingfpositon the clipper is retracted by means of the cable 36 to iQ-.point Where it ma \r be again filled, and it'may, if desired, be .again vneuwed to its operativ@ or latcherL position lby .exerting a pull on the` cable 29, but in the ordinary operationof4 the device the dipper support. 4ing armv Willlower the dipperjso that thev edge thereof will engage the surface of the coal as the flipper is being retracted and will thus cause the same to be moved to its lat'ched position.

While we have shown and described on vpairs of parallel. members spaced embodiment of our invention` we wishfitt0 be understood that ive d. not? desire to be limited to the details the eoi as various modiiications will occur to a person skilled in the art.

Having now iully described our invention, what We claim as new and desire to secure by Letters Patent, is; l. ln' a machine of the .character de scribed, an upright trame having for- 75 Wardly opening"vertical'guide-Ways, a struc ture extending transversely to said. guide. 'Ways and liaving'parts slirlably mounted therein, said structure and said guidewvays having-cooperating parts to hold the structure'against turning:,movement relativel) to; said gui(le-WaysY and to cause the transverse Strains on saidv structure to be transmitted to the edges of said ruide-waysl means for L moving said structure along: said guideoways and for holding the same inadjusted poitions, a dipperv supporting device [drei-allyinounted on said structure, a flipper carried. by said. device and movable lengthwise thereof., and means: for actuating said clipper. 2111i a v in. icliine ci. tbe ciiara er de scribed, an upright frame comprising tivo a'giert 'to form guide-ways, blocks slidably mounted between veeid parallel members, 'having flanges @engage the'. forward edges of seid parallel membersand having, @Etend-l ing beyond the forward edges of said pan nllel meinbe inem 3 for moving said blocks. elong said geideewajv and for holding the 100 sefne in their adjusted positions, a clipper supporting device pivotally connected with the lugs of said. blocks, an. excavating flipper carried by said device and nio -able. lengtl Wise tliereoiin and ineens for actuating said l. clipper, f

ln a machine ol the scribed. an opl ight fran werdlv opening vertical n; extending lengthwise of 'said gmc. si Uil elidedloos mounted inthe respectiveguide- Ways and having threaded apertures toA ree ceive tlie respective screws. said'elide blocksv havingflanges to engage. the forward edges of said guidevmys, means-for rotating said .115

screws, 'a clipper si-rpporting devicepiiaotally,

Airs

mountedon said structure, a dipper supporting device pivotally mounted on said struclture, a link connecting the outer end of said boom to the outer end of said dipper sup Eortin device, an excavatiig'dipper carried f sai dipperpsupporting evice forl movement, lengthwise thereof, and tuating said boom and said dipper.

' 16. 1n ae-machine of the character described, a supporting structure comprising a rotatable member, a di per supporting device pivotall Amounte on said member, an excavatin dipper carried by said device and-movable lengthwise thereof, a boom pivotallv mounted onfsaid member and connected with v-sa1d clipper supporting device at the outer Vzo means for imparting pivotal said boom to elevate the outer dipper supporting device` and end thereo movement to end of said for actuating rotating said fra-me.

17. In a machine of the character described, a' sup )ort-ing structure comprising a rotatable rame, an upright frame mounted on said rotating frame, a vertically adjustable member carried by said upright frame,-a tflipper supporting arm pivotally mounted on said' member, an excavating d-ipp'er supported by said varm and movable lengthwise thereof, a boom pivota'lly mounted onsaid rotatable frame, a linkconnection between the outer Vend, `of said boom and the outer end o eaid 'dipper supporting device, and

-lmeans for actuating said boom andv said fd-ipper. I"

means for ac-` said clipper, and means forv 18. In a'machine of the character described, a supporting structure, a dipper supporting device connected with said' structure, anexcavating clipper carried b'yfsaid dippersupf portin f device for Amovement lengthwise thereoi, said dpper having 'its sidewalls tapel-ed toward the forward edge thereof and having a rearwerdl and downwardly eY- tending rib arr-an e above, and between the planes of, said'si e members, and means to actuate said dipper.

19. In a machine ofthe character described, the combination with a rotatable frame vhaving atene end thereof lugs to receive an excavating boom, of a frame comprising a base member-havinon said rotate le frame,l and upright members rigidly secured to said base member, said upright members being arranged to form 'a guide-Way, a 'slide-block mounted in Said guide-Way, means for moving said slideblock along said guide-Way, a dipper supporting device connected with said block, an excavating dipper carried b said device and movable lengthwise thereo a boom pivotally mounted near the foot rof said frame and connected with said dip er supporting device near its outer end, and) means for actuating said boom and said (lippen In testimony whereof we, hereunto aiiix our signatures.

' onARLns B. KING.

FRANK RENZENBERGER; GRANT HOLMES.

V a part to fit between the' lugs 

